Transition metal dichalcogenide nanospheres for high-refractive-index nanophotonics and biomedical theranostics
Recent developments in the area of resonant dielectric nanostructures have created attractive opportunities for concentrating and manipulating light at the nanoscale and the establishment of the new exciting field of all-dielectric nanophotonics. Transition metal dichalcogenides (TMDCs) with nanopatterned surfaces are especially promising for these tasks. Still, the fabrication of these structures requires sophisticated lithographic processes, drastically complicating application prospects. To bridge this gap and broaden the application scope of TMDC nanomaterials, we report here femtosecond laser-ablative fabrication of water-dispersed spherical TMDC (MoS 2 and WS 2 ) nanoparticles (NPs) of variable size (5 to 250 nm). Such NPs demonstrate exciting optical and electronic properties inherited from TMDC crystals, due to preserved crystalline structure, which offers a unique combination of pronounced excitonic response and high refractive index value, making possible a strong concentration of electromagnetic field in the NPs. Furthermore, such NPs offer additional tunability due to hybridization between the Mie and excitonic resonances. Such properties bring to life a number of nontrivial effects, including enhanced photoabsorption and photothermal conversion. As an illustration, we demonstrate that the NPs exhibit a very strong photothermal response, much exceeding that of conventional dielectric nanoresonators based on Si. Being in a mobile colloidal state and exhibiting superior optical properties compared to other dielectric resonant structures, the synthesized TMDC NPs offer opportunities for the development of next-generation nanophotonic and nanotheranostic platforms, including photothermal therapy and multimodal bioimaging.
Citations by journals
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Photonics
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Photonics
2 publications, 10%
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Nanomaterials
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Nanomaterials
2 publications, 10%
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Applied Sciences (Switzerland)
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Applied Sciences (Switzerland)
2 publications, 10%
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Bulletin of the Lebedev Physics Institute
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Bulletin of the Lebedev Physics Institute
2 publications, 10%
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npj 2D Materials and Applications
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npj 2D Materials and Applications
1 publication, 5%
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Journal of Materials Chemistry C
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Journal of Materials Chemistry C
1 publication, 5%
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Bulletin of the Russian Academy of Sciences: Physics
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Bulletin of the Russian Academy of Sciences: Physics
1 publication, 5%
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ACS applied materials & interfaces
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ACS applied materials & interfaces
1 publication, 5%
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Advanced Materials
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Advanced Materials
1 publication, 5%
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Nano Letters
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Nano Letters
1 publication, 5%
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Optica
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Optica
1 publication, 5%
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Applied Surface Science
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Applied Surface Science
1 publication, 5%
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Optics Letters
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Optics Letters
1 publication, 5%
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Advanced Functional Materials
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Advanced Functional Materials
1 publication, 5%
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Advanced NanoBiomed Research
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Advanced NanoBiomed Research
1 publication, 5%
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Advanced Science
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Advanced Science
1 publication, 5%
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Citations by publishers
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Multidisciplinary Digital Publishing Institute (MDPI)
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Multidisciplinary Digital Publishing Institute (MDPI)
6 publications, 30%
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Wiley
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Wiley
4 publications, 20%
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Pleiades Publishing
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Pleiades Publishing
3 publications, 15%
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American Chemical Society (ACS)
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American Chemical Society (ACS)
2 publications, 10%
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Optical Society of America
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Optical Society of America
2 publications, 10%
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Springer Nature
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Springer Nature
1 publication, 5%
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Royal Society of Chemistry (RSC)
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Royal Society of Chemistry (RSC)
1 publication, 5%
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Elsevier
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Elsevier
1 publication, 5%
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